How to get parent entity key?

I use EntityFramework and in my edmx file I have two tables mapped:

Customers column: Id PK

and Orders columns: Id PK CustomerId FK

which are associated.

When I take Order object there IS Customer property but I can't see Custome开发者_如何学CrId property. I used to work with L2SQL and I expected to see CustomerId but EF somehow hides it.

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the Add Association dialog in the EF edmx designer allows you to specify (via a checkbox) whether or not you want to have a "Foreign Key" (and/or a Navigation Property) created for the association. did you make sure it's checked?

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Inside the Customer property, there should be a CustomerId property.

So try..

myOrderObject.Customer.CustomerId

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How exactly is the id column in the order table named? Usually the EF-Designer should create a property for each column in the database table. Have a look at the "Mapping details" page (which you can open in the context menu of the EF designer) to see if (and to which property) the column is mapped.